Equalizing car-truck.



c. E. SMITH. EQUALIZING UAR TRUCK. APPLICATION FILED 00116, 1912. RENEWED JULY 30. 1013.

l,10?,857, Patented Aug.18,1914

2 SHEETB-BHBET 1.

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G. E. SMITH.

EQUALIZIHG GAR TRUCK. APPLICATION FILED 001216, 1012'. nnuwnn JULY a0, 1913.

WIN/E8858. INVENTOR cf/are/v ce 6'. 7061 ATTORNEY a citizen of the United States,

"UN E sfraflas arnn'r o E. SMITH, OF ST. LOUIS, MISSOURI, ASSIGNOR TO DOUBLE BODY BOLSTER (10., 013 ST. LQUIS, MISSOURI, A CORPORATION OF NEW JERSEY.

CLARENCE ion.-

nouemzme can-TRUC I To all whom it may concern:

Be it known that I, CLARENCE E. SMITH, residing in the city ofSt. Louis and State of Missouri, have invented new and useful Improvements in Equalizing Car-Trucks, of which the following is a specification.

This inventionrelates to car trucks, and particularly to an equalizing support for the car body.

The principal object of the invention is to provide a support for the car body which shall not only equalize the weight thereof, but, shall be so associated with the truck frame as to make the same entirely inde pendent of the movement of the car body.

The salient feature of the invention resides in the provision of equalizing bars at each side of the truclrframe which are supported at their ends on the truck frame, or the journal box, on springs, which equalizing bars, through the medium 'of central hangers, are connected beneath the truck frame by a spring plank, on which are mounted elliptical springs; which, in turn, su port the car body. This construction a 'ords many advantages, which it is thought will "be better understood after'rcading the detailed description of the invention,and the statement thereof, accordingly, will be made later on in the specification.

I ,IWiSl'l to state, however, that the purpose of the intention may be accomplished in Various Ways, and the constructions shown in the drawings, and hereinafter described, are intended to illustrate the best means now known to me for accomplishing the objects of my invention. Also that my improved equalizing mechanism is applicable to trucks for all kinds of cars, including street, passenger and freight cars.

In the accompanying drawings: Figure 1 is aplan view of one-half of a truck frame constructed according to my invention; Fig. 2 is a sid elevation and section on the line BB of ig. 1; Fig. 3 is a cross sectional view on the line 11 A. of Fig. 1; Fig. 4 is a view similar toFig. 2, but illustrating a modified construction of hanger for support- 'ing the spring plank; Fig. 5 is also a view similar to Fig. 2, but illustrating a modification in the manner of supporting the equallzing bar from the truck frame; and

Fig. 6 is'a View similar to Fig. .5 and illus- Specification of Letters Patent. Application filed October 16, 1912, SerialNo. 725,969. Renewed July 30, 1913.

Patented Aug. 18, 1914.

Serial No. 782,138.

trating a further modification in the manner of supporting the ends of the equalizing bar. Referring nowv to the'drawings, 1 indicates the truck frame, and 1 the wheels thereof. The truck frame, in eneral, is of the usual construction, but (ii are from the ordinary truck frame in being provided at opposite sides with rectangular pockets 2 located at opposite ends of the transom bars 3. The construction at each side of the truck frame is identical, and a description of the parts located at one side of the truck frame, which will now be given, will apply equally well to the other. i

The numeral 4 indicates an equalizing bar, which is provided centrally of its length with an integral rectangular member 5, which I will term a guide-bloclr. This guideblock is received, and works in the pocket 2, but to prevent wear between the guide-block and the walls of said pocket the guide-block is surrounded by removable wear plates 6, and the pocket 2 is provided o'nits interior with removable wear plates 7, the wear plates 6 fitting loosely in he wear plates 7, so as to prevent constant fictional contact. The equalizing bar 4- carribs at each end a spring cap 8 which receives the upper end of a coil spring 9, the lower end of which is secured over the top-of the journal box 10. The guide-block 5 is recessed on its under side, as indicated at 11, and pivotally mounted in said recess, by means of a pivot-pin 12, is a bifurcated hanger 13, between thejaws of which is pivotally mounted and. secured, a

by means of a pivot-pin 14MB. spring-plank 15, the said spring-plank being supported at its opposite ends from corres )ondin hangers 13, as shown by Fig. 3. ecure on the spring-plank 15 are two elliptic springs 16, which, in turn, support the truck bolster 17, having a center plate 18.

From the construction above described, it will be seen that any downward movement of the car body, which in the case of each of the trucks supporting thecar body willbe transmitted at the center plate 18 to the'bolster 17, will result first in pressure upon the springs 16, thence through the spring-plank 15 upon the equalizing are 4 and thence through the springsQ upon the truck frame 1. Such moveme'nt is practically absorbed, therefore, before the effect thereof can be exerted upon the truck frame. Couversely,if

blocks, respectively working in said pockets, a spring-planl extending from side to side of the truck frame. and hangers pivotally mounted in said guide-blocks and connected at their lower ends, respectively, to opposite ends of said spring-plank.

7. In a car truck, in combination with a truck framcrigidly mounted with respect to the axles and provided at opposite sides with central guide-pockets, a. pair of equalizing bars located, respectively, at opposite sides of the truck frame and provided with central guide-blocl s, respectively working in said guide-pockets, a pair of spring-s11pported bars mounted on each .side of the truck frame and pivotally connected intermediate their ends to cppositeends of the said equal" izing bars, a hangerpivotally supported from each of said guidelocks,'and a springplank extending from side to side of the truck and pivotall; connected at its ends to said hangers.

8. In a car truck, in combination with a truck frame rigidly mounted with respect to the axles, a pair of equalizing bars located, respectively, at opposite sides of the truck frame, a pair of springs. mounted on each side member of the truck frame and sup orting opposite ends of said equalizing ars,

so and a spring-plank supported at its ends ironi said equalizing bars.

9. In a car truck, in combination with a truck frame rigidly mounted with respect to the axles, a pair of equalizing bars located,

respectively, at opposite sides of the truck frame and supported at opposite ends thereon by springs, a spring-plank supported at its ends from said equalizing bars, a truck bolster, and springs mounted on said springplank and supporting said bolster.

10. In a car truck, a truck frame rigidly mounted with respect to the axles, a pair of equalizing bars, each of which is spring-supported at its ends upon a side member of the truck frame, a transverse spring-plank pivotally supported at its ends from said equalizing bars, springs mounted on said spring plank, and a bolster mounted on said springs for supporting the car body.

11. A car truck frame consisting of side members, centrally located spaced transom members, and Walls between said transom members forming a guideway for an equalizing bar. g

12. The combination of a car truck having a guideway, supporting springs, and an equalizing bar having an integral rriember operating in said guideway, the ends of said bar cooperatin with said springs.

13. The com ination of a car truck frame having a guideway, an equalizing bar yieldingly supported upon said frame and operating in said guidewey, and hangers connected to said equalizing bar for supporting the truck bolster.

14. The combination of a car truck frame, an equalizing bar yieldingly mounted thereon, hangers connected to said bar, and a bolster supported by said hanger.

15. Thecombination of a car truck frame having a centrally located guideway, an equalizing bar yieldingly supported at each end upon said frame and having a member 0 crating in said guideway, hangers pivota ly connected to said equalizing bar, and a bolster supported by said hangers.

16. The combination with a car truck frame, of an equalizing bar yieldingly sup ported upon said frame and having a centrally located guiding member cooperating with a guideway in said frame, carrying members connected to said guiding member and extending down under a bolster for supporting said bolster, and a bolster carried by said members.

In testimony whereof, I have hereunto set my hand in presence of two subscribing witnesses.

CLARENCE E. SMITH. Witnesses:

Bacon S. l lnmo r'r, STELLA Hum. 

